Page 149 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

2 fuel line

Causes Remedy
Leakage of fuel line Repair the fuel line
fill air into fuel line Bleeding the fuel line

3 diesel fuel Filter
Causes Remedy
Filter insert closed choke Insert new filter elements.
Block bypass valve Clean bypass valve
4 water separator

Causes
water separate elements is not working Replace the element
5 Fuel Feed pump

Causes Remedy
Wear of fuel feed pump parts. Repair or replace.
pump delivery valve is block /breakage of spring. Clean the delivery valve. Change the spring.
6 Fuel Injection pump

Wear of fuel injection pump parts Replace or repair
Incorrect pump phasing/uneven delivery Perform pump phasing calibration.
Delivery valve jamming of pump/breakage of Clean delivery valve/replace spring.
spring.
Full load/course of delivery exceeding Calibrate the pump
7 injector

Causes Remedy
Clogged nozzle hole / jammed needle / spray not Clean the nozzle.
working properly
Nozzle jammed in open position/nozzle holder rim Replace nozzles, replace rings.
spring broken
Leakage of injectors sealing replace the washer.

8 Glow Plug
Causes Remedy
Heater Plugs Circuit Malfunction Check circuit, replace heater plug.
Common faults – problem in starting

Causes Remedy
finished diesel in tank Replenish diesel
adulteration in diesel Add good diesel of right grade.
air hole in tank lid clogged Open the hole in the tank cap.
blockage in low pressure pipe Clean the pipes.
Filter inserts clogged (choked) Clean or replace the filter element.
overflow valve jam/leakage Bleed air from the diesel line.
air in fuel system Correct the lever
governor stop lever pulled Set the timing correctly

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CITS : Automotive - Mechanic Diesel - Lesson 31 - 38